# Difference between revisions of "Asymptote: Help"

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− | + | [asy] | |

+ | size(150); | ||

+ | real ticklen=3; | ||

+ | real tickspace=2; | ||

− | == | + | real ticklength=0.1cm; |

− | + | real axisarrowsize=0.14cm; | |

+ | pen axispen=black+1.3bp; | ||

+ | real vectorarrowsize=0.2cm; | ||

+ | real tickdown=-0.5; | ||

+ | real tickdownlength=-0.15inch; | ||

+ | real tickdownbase=0.3; | ||

+ | real wholetickdown=tickdown; | ||

+ | void rr_cartesian_axes(real xleft, real xright, real ybottom, real ytop, real xstep=1, real ystep=1, bool useticks=false, bool complexplane=false, bool usegrid=true) { | ||

+ | import graph; | ||

+ | real i; | ||

+ | if(complexplane) { | ||

+ | label("<math>\textnormal{Re}</math>",(xright,0),SE); | ||

+ | label("<math>\textnormal{Im}</math>",(0,ytop),NW); | ||

+ | } else { | ||

+ | label("<math>x</math>",(xright+0.4,-0.5)); | ||

+ | label("<math>y</math>",(-0.5,ytop+0.2)); | ||

+ | } | ||

− | + | ylimits(ybottom,ytop); | |

+ | xlimits( xleft, xright); | ||

+ | real[] TicksArrx,TicksArry; | ||

− | + | for(i=xleft+xstep; i<xright; i+=xstep) { | |

+ | if(abs(i) >0.1) { | ||

+ | TicksArrx.push(i); | ||

+ | } | ||

+ | } | ||

+ | for(i=ybottom+ystep; i<ytop; i+=ystep) { | ||

+ | if(abs(i) >0.1) { | ||

+ | TicksArry.push(i); | ||

+ | } | ||

+ | } | ||

+ | if(usegrid) { | ||

+ | xaxis(BottomTop(extend=false), Ticks("%", TicksArrx ,pTick=gray(0.22),extend=true),p=invisible);//,above=true); | ||

+ | yaxis(LeftRight(extend=false),Ticks("%", TicksArry ,pTick=gray(0.22),extend=true), p=invisible);//,Arrows); | ||

+ | } | ||

+ | if(useticks) { | ||

+ | xequals(0, ymin=ybottom, ymax=ytop, p=axispen, Ticks("%",TicksArry , pTick=black+0.8bp,Size=ticklength), above=true, Arrows(size=axisarrowsize)); | ||

+ | yequals(0, xmin=xleft, xmax=xright, p=axispen, Ticks("%",TicksArrx , pTick=black+0.8bp,Size=ticklength), above=true, Arrows(size=axisarrowsize)); | ||

− | + | } else { | |

− | + | xequals(0, ymin=ybottom, ymax=ytop, p=axispen, above=true, Arrows(size=axisarrowsize)); | |

− | + | yequals(0, xmin=xleft, xmax=xright, p=axispen, above=true, Arrows(size=axisarrowsize)); | |

− | + | } | |

− | + | }; | |

− | + | rr_cartesian_axes(-5,5,-5,6); | |

− | + | draw((-4,4)--(-1,0)--(0,2)--(4,-4),red); | |

− | + | [/asy] | |

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## Revision as of 08:30, 16 June 2019

[asy] size(150); real ticklen=3; real tickspace=2;

real ticklength=0.1cm; real axisarrowsize=0.14cm; pen axispen=black+1.3bp; real vectorarrowsize=0.2cm; real tickdown=-0.5; real tickdownlength=-0.15inch; real tickdownbase=0.3; real wholetickdown=tickdown; void rr_cartesian_axes(real xleft, real xright, real ybottom, real ytop, real xstep=1, real ystep=1, bool useticks=false, bool complexplane=false, bool usegrid=true) { import graph; real i; if(complexplane) { label("",(xright,0),SE); label("",(0,ytop),NW); } else { label("",(xright+0.4,-0.5)); label("",(-0.5,ytop+0.2)); }

ylimits(ybottom,ytop); xlimits( xleft, xright); real[] TicksArrx,TicksArry;

for(i=xleft+xstep; i<xright; i+=xstep) { if(abs(i) >0.1) { TicksArrx.push(i); } } for(i=ybottom+ystep; i<ytop; i+=ystep) { if(abs(i) >0.1) { TicksArry.push(i); } }

if(usegrid) { xaxis(BottomTop(extend=false), Ticks("%", TicksArrx ,pTick=gray(0.22),extend=true),p=invisible);//,above=true); yaxis(LeftRight(extend=false),Ticks("%", TicksArry ,pTick=gray(0.22),extend=true), p=invisible);//,Arrows); } if(useticks) { xequals(0, ymin=ybottom, ymax=ytop, p=axispen, Ticks("%",TicksArry , pTick=black+0.8bp,Size=ticklength), above=true, Arrows(size=axisarrowsize)); yequals(0, xmin=xleft, xmax=xright, p=axispen, Ticks("%",TicksArrx , pTick=black+0.8bp,Size=ticklength), above=true, Arrows(size=axisarrowsize));

} else { xequals(0, ymin=ybottom, ymax=ytop, p=axispen, above=true, Arrows(size=axisarrowsize)); yequals(0, xmin=xleft, xmax=xright, p=axispen, above=true, Arrows(size=axisarrowsize)); } }; rr_cartesian_axes(-5,5,-5,6); draw((-4,4)--(-1,0)--(0,2)--(4,-4),red); [/asy]